mastery.us - robtex.com
mastery.us
us
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.cctld.us ⭐ | ||||||
| NS | b.cctld.us | ||||||
| NS | f.cctld.us | ||||||
| NS | k.cctld.us | ||||||
| NS | m.cctld.us | ||||||
| NS | n.cctld.us | ||||||
| NS | w.cctld.us | ||||||
| NS | x.cctld.us | ||||||
| NS | y.cctld.us | ||||||
| SOA | a.cctld.usadmin@tldns.godaddy serial=1774388892 | ||||||
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NSpdns13.domaincontrol.com2026-03-02 → 2026-03-24 · 2 obs
● 2026-03-24 21:55:44
●NSpdns14.domaincontrol.com2026-03-02 → 2026-03-24 · 2 obs
● 2026-03-24 21:55:44
●MXmailstore1.secureserver.net2026-03-02 → 2026-03-24 · 2 obs
● 2026-03-24 21:55:44
●MXsmtp.secureserver.net2026-03-02 → 2026-03-24 · 2 obs
● 2026-03-24 21:55:44
●A15.197.225.1282026-03-02 → 2026-03-24 · 2 obs
● 2026-03-24 21:55:44
●A3.33.251.1682026-03-02 → 2026-03-24 · 2 obs
● 2026-03-24 21:55:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| us | x.cctld.us, b.cctld.us, f.cctld.us, k.cctld.us... | - |
| mastery.us | pdns13.domaincontrol.com, pdns14.domaincontrol.com | - |
✅ Authoritative Response
Server:173.201.78.56
NS records: pdns13.domaincontrol.com, pdns14.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mastery.us (unsigned zone)
⏱️ Timing
Total: 327ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 15.197.225.128, 3.33.251.168 |
| NS | 2 | pdns13.domaincontrol.com, pdns14.domaincontrol.com |
| MX | 2 | smtp.secureserver.net (pri: 0), mailstore1.secureserver.net (pri: 10) |
| SOA | 1 | pdns13.domaincontrol.com dns.jomax.net |
Analysis
IP Addresses
mastery.us points to two IPs: 3.33.251.168 and 15.197.225.128.
Other host names, for instance inintsol.com, bestearly.org, everfreshfilms.com, theinsidersgame.com and latinbay.com share IP numbers with mastery.us.
Name Servers
Two name servers pdns13.domaincontrol.com and pdns14.domaincontrol.com are delegated to mastery.us.
mastery.us uses the same name server configuration as other domains, such as pgpcompanies.com, startek.net, arlingtonimaging.org, save-industriebanden.nl and whitesmilesalbertville.com.
Host names with a single IP address:
pdns13.domaincontrol.com points to 97.74.110.56
pdns14.domaincontrol.com points to 173.201.78.56
Mail Servers
Two mail servers handle mastery.us: mailstore1.secureserver.net and smtp.secureserver.net.
mastery.us shares the same mail server setup as other domains, including epedigreesolution.com, campusapartments.co, locorewards.net, va(0x706f726e)a.com and erratica.us.
mastery.us shares some mail servers with other domains, for instance depp24.de and medicom.in.
Host names with three IP numbers:
mailstore1.secureserver.net points to 216.69.141.78, 216.69.141.114 and 216.69.141.162; smtp.secureserver.net points to 216.69.141.71, 216.69.141.84 and 216.69.141.113.